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Anatomy Lab > Leg Muscles > Flashcards

Leg Muscles Flashcards

1
Q

Gastrocnemius origin

A

Posterior femur, proximal to lateral and medial condyles

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2
Q

Gastrocnemius insertion

A

Calcaneal tendon (Achilles) to calcaneal tuberosity

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3
Q

Gastrocnemius action

A

Flex knee (open chain), plantar flex ankle

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4
Q

Gastrocnemius innervation

A

Tibial nerve

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5
Q

Gastrocnemius blood supply

A

Medial head - medial sural artery
Lateral head - lateral sural artery

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6
Q

Soleus origin

A

Soleal line, proximal 1/3 posterior tibia and fibula

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7
Q

Soleus insertion

A

Calcaneal tendon to calcaneous

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8
Q

Soleus action

A

Plantar flex the ankle

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9
Q

Soleus innervation

A

Tibial nerve

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10
Q

Soleus blood supply

A

Popliteal artery, post tibial artery, peroneal artery

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11
Q

Plantaris origin

A

Lateral femoral epicondyle

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12
Q

Plantaris insertion

A

Calcaneous, anteromedial to Achilles tendon

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13
Q

Plantaris action

A

Weak plantar flexion of ankle, weak flexion of knee (open chain)

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14
Q

Plantaris innervation

A

Tibial nerve

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15
Q

Plantaris blood supply

A

Superficial- lateral sural artery
Deep - superior lateral genicular artery

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16
Q

Flexor digitorum longus origin

A

Middle 1/3 posterior surface of tibia

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17
Q

Flexor digitorum longus insertion

A

Distal phalanges of lateral 4 toes (2-5)

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18
Q

Flexor digitorum longus action

A

Flex toes 2-5
Weak plantar flexion and inversion of ankle

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19
Q

Flexor digitorum longus innervation

A

Tibial nerve

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20
Q

Flexor digitorum longus blood supply

A

Posterior tibial artery

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21
Q

Flexor hallucis longus origin

A

Middle 1/3 posterior surface of fibula

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22
Q

Flexor hallucis longus insertion

A

Distal phalanx of big toe

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23
Q

Flexor hallucis longus action

A

Flex big toe, weak ankle plantar flexion

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24
Q

Flexor hallucis longus blood supply

A

Posterior tibial artery

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25
Q

Flexor hallucis longus innervation

A

Tibial nerve

26
Q

Tibialis posterior origin

A

Proximal 2/3 posterior surface of tibia, proximal 2/3 surface of fibula and interosseous membrane

27
Q

Tibialis posterior insertion

A

Navicular, cuneiforms, cuboid, bases of MT 2-4

28
Q

Tibialis posterior action

A

Ankle inversion

29
Q

Tibialis posterior innervation

A

Tibial nerve

30
Q

Tibialis posterior blood supply

A

Posterior tibial artery

31
Q

Peroneous (fibularis) longus origin

A

Proximal 2/3 lateral surface of fibula

32
Q

Peroneous longus insertion

A

Base of 1st metatarsal, medial cuneiform

33
Q

Peroneous longus action

A

Ankle eversion, weak plantar flexion of ankle

34
Q

Peroneous longus innervation

A

Superficial peroneal nerve

35
Q

Peroneous longus blood supply

A

Peroneal artery

36
Q

Peroneous brevis origin

A

Distal 2/3 lateral surface of fibula

37
Q

Peroneous brevis insertion

A

Dorsal surface of 5th metatarsal

38
Q

Peroneous brevis action

A

Ankle eversion, weak plantar flexion of ankle

39
Q

Peroneous brevis innervation

A

Superficial Peroneal nerve

40
Q

Peroneous brevis blood supply

A

Branches of peroneal and tibial arteries

41
Q

Tibialis anterior origin

A

Lateral condyle of tibia, proximal 2/3 lateral surface of tibia

42
Q

Tibialis anterior insertion

A

Medial cuneiform, base of 1st metatarsal

43
Q

Tibialis anterior action

A

Dorsiflexion of ankle, ankle inversion

44
Q

Tibialis anterior innervation

A

Deep fibular nerve

45
Q

Tibialis anterior blood supply

A

Anterior tibial artery

46
Q

Extensor digitorum longus origin

A

Lateral tibial condyle

47
Q

Extensor digitorum longus insertion

A

Middle and distal phalanges 2-5

48
Q

Extensor digitorum longus action

A

Extend toes 2-3, ankle eversion, ankle dorsiflexion

49
Q

Extensor digitorum longus innervation

A

Deep fibular nerve

50
Q

Extensor digitorum longus blood supply

A

Anterior tibial artery

51
Q

Extensor hallucis longus origin

A

Middle 1/3 of anterior fibula

52
Q

Extensor hallucis longus insertion

A

Distal phalanx of big toe

53
Q

Extensor hallucis longus action

A

Extend big toe, ankle dorsiflexion and eversion

54
Q

Extensor hallucis longus blood supply

A

Anterior tibial artery

55
Q

Extensor hallucis longus innervation

A

Deep fibular nerve

56
Q

Peroneous tertius origin

A

Fibula, common fibers from extensor digitorum longus

57
Q

Peroneous tertius insertion

A

Dorsal surface, base of 5th metatarsal

58
Q

Peroneous tertius action

A

Ankle dorsiflexion

59
Q

Peroneous tertius innervation

A

Deep fibular nerve

60
Q

Peroneous tertius blood supply

A

Dorsalis pedis artery

Anatomy Lab (11 decks)

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